Q.1
Which of the following materials can be tested by MPI?
  • a) Ferromagnetic
  • b) Magnetic
  • c) Non-magnetic
  • d) Paramagnetic
Q.2
As the height of rebound enhances the material’s hardness ___________
  • a) Remains constant
  • b) Decreases
  • c) Increases
  • d) First Increases and then decreases
Q.3
What is the Knoop hardness of diamond?
  • a) 2000 HK
  • b) 4000 HK
  • c) 7000 HK
  • d) 5000 HK
Q.4
Which of the following scale is used to test softer materials?
  • a) A
  • b) B
  • c) C
  • d) D
Q.5
What test force is applied for nonferrous materials in Brinell test?
  • a) 500 kgf
  • b) 1000 kgf
  • c) 3000 kgf
  • d) 50 kgf
Q.6
For higher __________ indentation hardness is also higher.
  • a) Stiffness
  • b) Ductility
  • c) Plasticity
  • d) Maleabitility
Q.7
__________ is used for measuring the hardness of brittle materials.
  • a) Shore hardness test
  • b) Vickers hardness test
  • c) Brinell hardness test
  • d) Rockwell hardness test
Q.8
Which of the following material has the lowest scratch hardness?
  • a) Gypsum
  • b) Talc
  • c) Topaz
  • d) Diamond
Q.9
With increase in stacking fault energy, fatigue strength of material __________
  • a) Remains constant
  • b) Decreases
  • c) Increases
  • d) First Increases and then decreases
Q.10
Which of the following materials is predominated by thermal failure?
  • a) Actual
  • b) Nylon
  • c) PMMA
  • d) Polycarbonate
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